Trends of surface PM2.5 over Beijing–Tianjin–Hebei in 2013–2015 and their causes: emission controls vs. meteorological conditions

by Ying WEI, Jie LI, Zi-Fa WANG, Huan-Sheng CHEN, Qi-Zhong WU, Jian-Jun LI, Yuan-Lin WANG, Wei WANG
Published 2017-07-01